drivers/iio/gyro/st_gyro_i2c.c

   1 /*
   2  * STMicroelectronics gyroscopes driver
   3  *
   4  * Copyright 2012-2013 STMicroelectronics Inc.
   5  *
   6  * Denis Ciocca <denis.ciocca@st.com>
   7  *
   8  * Licensed under the GPL-2.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/slab.h>
  14 #include <linux/i2c.h>
  15 #include <linux/iio/iio.h>
  16
  17 #include <linux/iio/common/st_sensors.h>
  18 #include <linux/iio/common/st_sensors_i2c.h>
  19 #include "st_gyro.h"
  20
  21 #ifdef CONFIG_OF
  22 static const struct of_device_id st_gyro_of_match[] = {
  23         {
  24                 .compatible = "st,l3g4200d-gyro",
  25                 .data = L3G4200D_GYRO_DEV_NAME,
  26         },
  27         {
  28                 .compatible = "st,lsm330d-gyro",
  29                 .data = LSM330D_GYRO_DEV_NAME,
  30         },
  31         {
  32                 .compatible = "st,lsm330dl-gyro",
  33                 .data = LSM330DL_GYRO_DEV_NAME,
  34         },
  35         {
  36                 .compatible = "st,lsm330dlc-gyro",
  37                 .data = LSM330DLC_GYRO_DEV_NAME,
  38         },
  39         {
  40                 .compatible = "st,l3gd20-gyro",
  41                 .data = L3GD20_GYRO_DEV_NAME,
  42         },
  43         {
  44                 .compatible = "st,l3gd20h-gyro",
  45                 .data = L3GD20H_GYRO_DEV_NAME,
  46         },
  47         {
  48                 .compatible = "st,l3g4is-gyro",
  49                 .data = L3G4IS_GYRO_DEV_NAME,
  50         },
  51         {
  52                 .compatible = "st,lsm330-gyro",
  53                 .data = LSM330_GYRO_DEV_NAME,
  54         },
  55         {
  56                 .compatible = "st,lsm9ds0-gyro",
  57                 .data = LSM9DS0_GYRO_DEV_NAME,
  58         },
  59         {},
  60 };
  61 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  62 #else
  63 #define st_gyro_of_match NULL
  64 #endif
  65
  66 static int st_gyro_i2c_probe(struct i2c_client *client,
  67                                                 const struct i2c_device_id *id)
  68 {
  69         struct iio_dev *indio_dev;
  70         struct st_sensor_data *gdata;
  71         int err;
  72
  73         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
  74         if (!indio_dev)
  75                 return -ENOMEM;
  76
  77         gdata = iio_priv(indio_dev);
  78         st_sensors_of_name_probe(&client->dev, st_gyro_of_match,
  79                                  client->name, sizeof(client->name));
  80
  81         st_sensors_i2c_configure(indio_dev, client, gdata);
  82
  83         err = st_gyro_common_probe(indio_dev);
  84         if (err < 0)
  85                 return err;
  86
  87         return 0;
  88 }
  89
  90 static int st_gyro_i2c_remove(struct i2c_client *client)
  91 {
  92         st_gyro_common_remove(i2c_get_clientdata(client));
  93
  94         return 0;
  95 }
  96
  97 static const struct i2c_device_id st_gyro_id_table[] = {
  98         { L3G4200D_GYRO_DEV_NAME },
  99         { LSM330D_GYRO_DEV_NAME },
 100         { LSM330DL_GYRO_DEV_NAME },
 101         { LSM330DLC_GYRO_DEV_NAME },
 102         { L3GD20_GYRO_DEV_NAME },
 103         { L3GD20H_GYRO_DEV_NAME },
 104         { L3G4IS_GYRO_DEV_NAME },
 105         { LSM330_GYRO_DEV_NAME },
 106         { LSM9DS0_GYRO_DEV_NAME },
 107         {},
 108 };
 109 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
 110
 111 static struct i2c_driver st_gyro_driver = {
 112         .driver = {
 113                 .name = "st-gyro-i2c",
 114                 .of_match_table = of_match_ptr(st_gyro_of_match),
 115         },
 116         .probe = st_gyro_i2c_probe,
 117         .remove = st_gyro_i2c_remove,
 118         .id_table = st_gyro_id_table,
 119 };
 120 module_i2c_driver(st_gyro_driver);
 121
 122 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 123 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
 124 MODULE_LICENSE("GPL v2");